Which seymor duncan basslines pup? But, anyway, use it plus whichever of the J pups goes best with it for you and tonal variations between the pups both solo and with various blends. If its a good articulate and crunchy voiced P pup you got. It might work as alt to J.

Not sure exactly, it's music man style and alnico I believe. Really hot lows and mids. Should i mount it in the bridge position, i was thinking of finding a sweet spot where a "p" pup would be traditionally but im undecided.